NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,081 reports44,000 miles · Apr 7, 2011
Electrical System
TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 35-40 MPH, THE SPEEDOMETER BEGAN FAILING INTERMITTENTLY. THE FAILURE PROGRESSED UNTIL THE ENTIRE INSTRUMENT CLUSTER FAILED. THE CONTACT WAS ABLE TO SECURE AN APPOINTMENT WITH THE DEALER FOR DIAGNOSIS AND POSSIBLE REPAIRS. THE APPROXIMATE FAILURE MILEA…
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TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 35-40 MPH, THE SPEEDOMETER BEGAN FAILING INTERMITTENTLY. THE FAILURE PROGRESSED UNTIL THE ENTIRE INSTRUMENT CLUSTER FAILED. THE CONTACT WAS ABLE TO SECURE AN APPOINTMENT WITH THE DEALER FOR DIAGNOSIS AND POSSIBLE REPAIRS. THE APPROXIMATE FAILURE MILEAGE WAS 44,000 AND THE CURRENT MILEAGE WAS 48,000. UPDATED 06/07/11*LJ THE CONSUMER ALSO STATED THE TACHOMETER AND OIL PRESSURE WERE NOT WORKING AS WELL. UPDATED 06/10/11 UPDATED 06/20/11
NHTSA ODI #10395128
76,000 miles · Apr 5, 2011
Electrical SystemExterior Lighting
AUTOMATIC HEADLIGHTS GO COMPLETELY OFF FOR NO REASON, AND THEN WILL COME BACK ON BUT NO APPARENT REASON,LEAVING YOU DRIVING COMPLETELY IN THE DARK. (TURNING THE CAR OFF AND RESTARTING IT DOES NOT EFFECT IT EITHER.) DAYTIME RUNNING LIGHTS WILL ALSO GO OFF. THIS PROBLEM 1ST BEGAN APPR 2 YEARS AGO BUT HAS BECOME MORE FREQUENT 3 TIM…
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AUTOMATIC HEADLIGHTS GO COMPLETELY OFF FOR NO REASON, AND THEN WILL COME BACK ON BUT NO APPARENT REASON,LEAVING YOU DRIVING COMPLETELY IN THE DARK. (TURNING THE CAR OFF AND RESTARTING IT DOES NOT EFFECT IT EITHER.) DAYTIME RUNNING LIGHTS WILL ALSO GO OFF. THIS PROBLEM 1ST BEGAN APPR 2 YEARS AGO BUT HAS BECOME MORE FREQUENT 3 TIMES A WEEK IN THE LAST 6 MONTHS. ALSO THE SPEEDOMETER AND TACHOMETER NO LONGER WORK. THEY PERIODICALLY WILL COME BACK ON BUT HAS NOT WORKED IN 2 WEEKS. *TR
NHTSA ODI #10394340
70,000 miles · Mar 27, 2011
Electrical System
04 TRAILBLAZER INSTRUMENT CLUSTER (SPEEDOMETER) WORKS INTERMITTENTLY MULTIPLE TIMES. *TR
NHTSA ODI #10392990
65,000 miles · Mar 24, 2011
Electrical System
AT ABOUT 65,000 MILES MY TACHOMETER STARTED TO READ IMPROPER, LATER MY GAUGES BEGAN TO READ IMPROPER. THIS DOESN'T HAPPEN ALL THE TIME. BUT YOU CAN'T TRUST THEM. YOU NEVER KNOW HOW FAST YOU ARE GOING, IF YOU HAVE FUEL, IF YOUR ENGINE IS OVERHEATING,IF BATTERY IS CHARGING, IF I HAVE OIL PRESSURE. I AM ON DISIBILTY AND CAN'T AFFO…
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AT ABOUT 65,000 MILES MY TACHOMETER STARTED TO READ IMPROPER, LATER MY GAUGES BEGAN TO READ IMPROPER. THIS DOESN'T HAPPEN ALL THE TIME. BUT YOU CAN'T TRUST THEM. YOU NEVER KNOW HOW FAST YOU ARE GOING, IF YOU HAVE FUEL, IF YOUR ENGINE IS OVERHEATING,IF BATTERY IS CHARGING, IF I HAVE OIL PRESSURE. I AM ON DISIBILTY AND CAN'T AFFORD THE SEVERAL HUNDERED DOLLARS IT WILL COST TO REPAIR. I HAVE FOUND FROM A FEW SOURCES THIS IS A COMMON PROBLEM. I JUST TALKED TO GM, I WAS TOLD THAT IF I HAD IT REPAIRED TO KEEP MY RECIEPTS. BUT THERE IS NO RECALL ON THE 04 TRAILBLAZER ONLY ON FULL SIZE VEHICLES. SO IF I SPENT MORE MONEY ON AN OTHER VENICLE GM WOULD FIX IT AND MAKE IT SAFE. I FEEL IT IS UNSAFE FOR MYSELF OR MY WIFE. *TR
NHTSA ODI #10392797
69,000 miles · Mar 24, 2011
Electrical System
TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 40 MPH THE CONTACT NOTICED THE SPEEDOMETER WAS OPERATING ERRATICALLY AND WOULD ALSO FREEZE AT A CERTAIN NUMBER. THE VEHICLE WAS TAKEN TO A DEALER WHERE THE SPEEDOMETER WAS MANUALLY RESET YET THE FAILURE RECURRED. THE VEHICLE WAS NOT FURTHER REPAIRED…
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TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 40 MPH THE CONTACT NOTICED THE SPEEDOMETER WAS OPERATING ERRATICALLY AND WOULD ALSO FREEZE AT A CERTAIN NUMBER. THE VEHICLE WAS TAKEN TO A DEALER WHERE THE SPEEDOMETER WAS MANUALLY RESET YET THE FAILURE RECURRED. THE VEHICLE WAS NOT FURTHER REPAIRED. IN ADDITION, THE CONTACT STATED THAT THE PLASTIC THAT COVERED THE INSTRUMENT CLUSTER WAS ALSO DAMAGED FROM ATTEMPTING TO RESET THE SPEEDOMETER. THE MANUFACTURER WAS CONTACTED BUT OFFERED NO ASSISTANCE. THE APPROXIMATE FAILURE MILEAGE WAS 69,000. UPDATED 6/8/11 *CN UPDATED 06/16/11
NHTSA ODI #10392795
97,254 miles · Mar 16, 2011
Visibility
WINDSHIELD WIPERS WILL NOT TURN OFF. *TR
NHTSA ODI #10390437
80,000 miles · Mar 13, 2011
Electrical System
2004 CHEVY TRAILBLAZER ALL GAUGES, TACHOMETER, SPEEDOMETER, BATTERY, FUEL, HAVE FAILED ONE AT A TIME STARTING WITH TACHOMETER NOT OPERATING AT ALL, TO SPEEDOMETER SPORADIC FOR SEVERAL MONTHS, NOW CURRENTLY STUCK AT OVER 120MPH. HAVE CONTACTED DEALER ABOUT PROBLEM AND THEY SAY IT IS A VERY COMMON PROBLEM IN THIS MODEL, THERE HAS …
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2004 CHEVY TRAILBLAZER ALL GAUGES, TACHOMETER, SPEEDOMETER, BATTERY, FUEL, HAVE FAILED ONE AT A TIME STARTING WITH TACHOMETER NOT OPERATING AT ALL, TO SPEEDOMETER SPORADIC FOR SEVERAL MONTHS, NOW CURRENTLY STUCK AT OVER 120MPH. HAVE CONTACTED DEALER ABOUT PROBLEM AND THEY SAY IT IS A VERY COMMON PROBLEM IN THIS MODEL, THERE HAS BEEN NO RECALL FOR THIS ISSUE AND WOULD BE APPROX. $1500 TO REPAIR. WHY IS GM NOT CONCERNED WITH THIS ISSUE? THIS IS DEFINITELY A SAFETY ISSUE TO BE DRIVING AT UNKNOWN SPEEDS WITH AN UNKNOWN FUEL LEVEL, ETC.---- ABSOLUTELY ABSURD!!! *TR
NHTSA ODI #10390008
89,000 miles · Mar 10, 2011
Electrical System
THE 2004 TRAILBLAZER HAS A MALFUNCTION IN THE RPM AND SPEEDOMETER GAUGE. THIS IS APPARENTLY A DEFECT THAT GM SHOULD ACKNOWLEDGE AND BE HELD ACCOUNTABLE FOR. *TR
NHTSA ODI #10389717
54,000 miles · Mar 8, 2011
Electrical System
MY CAR HAS ONLY 54000 MILES ON IT AND THE INSTRUMENT PANEL IS SHOT. THE DEALER WANTS $600 TO FIX IT. MY SPEEDOMETER, OIL PRESSURE , AND GAS GAUGE ONLY WORK MAYBE 10% OF THE TIME. IT IS JUST TERRIBLE THAT I HAVE TO PAY FOR THIS OUT OF MY OWN POCKET WHEN THIS IS OBVIOUSLY A DETECTIVE PART. IF THIS WOULD HAVE HAPPENED AT 120,00…
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MY CAR HAS ONLY 54000 MILES ON IT AND THE INSTRUMENT PANEL IS SHOT. THE DEALER WANTS $600 TO FIX IT. MY SPEEDOMETER, OIL PRESSURE , AND GAS GAUGE ONLY WORK MAYBE 10% OF THE TIME. IT IS JUST TERRIBLE THAT I HAVE TO PAY FOR THIS OUT OF MY OWN POCKET WHEN THIS IS OBVIOUSLY A DETECTIVE PART. IF THIS WOULD HAVE HAPPENED AT 120,000MILES I WOULD NOT HAVE BEEN UPSET. THAT'S NORMAL WEAR AND TEAR. OUTRAGEOUS. I FEEL TAKEN ADVANTAGE OF. *TR
NHTSA ODI #10386860
Mileage unknown · Mar 3, 2011
Electrical System
CLUSTER NOT WORKING IN 2004 CHEVY TRAILBLAZER. CHEVY RECALLED CLUSTERS IN OTHER CHEVY VEHICLES BUT NOT TRAILBLAZER. *TR
NHTSA ODI #10386312
NHTSA investigations
4RQ17002 · Loss Of Headlights
Opened Apr 24, 2017 · Closed Mar 29, 2021
Status: closed (inferred from source dates) · Exterior Lighting:headlights
The subject vehicles are model year (MY) 2002-2009 Chevrolet Trailblazer, GMC Envoy, 2004-2007 Buick Rainier, 2003-2008 Isuzu Ascender, 2005-2009 Saab 9-7X, 2002-2004 Oldsmobile Bravada, 2003-2006 Chevrolet SSR, 2005-2009 Buick Lacrosse, and 2006-2008 Pontiac Grand Prix. This scope includes the Trailblazer/Envoy variants: 2002-2006 Envoy XL/Trailblazer EXT and 2004-2005 Envoy XUV. The original scope of this investigation was expanded to include all vehicles equipped with the subject Headlight Driver Module (HDM). The focus of the investigation was to determine whether actions performed by General Motors adequately addressed any unreasonable risk to motor vehicle safety in the subject vehicles concerning the headlights and the HDM that controls them.Under normal electrical load and environmental conditions, the HDM can overheat inside the Underhood Electrical Center (UEC). This can cause the module to fail and result in a simultaneous loss of both low beam headlights and both daytime running lights (DRLs), often with no warning or prior detectability to the driver. This failure can be intermittent or permanent. No other exterior lights are affected. High beams, turn signals, brake lights, and reverse lights are still operational.General Motors addressed this issue with 2 recalls (14V755 & 15V519) and a special coverage program (N172091910). In view of the recalls and special coverage program implemented by GM and the vehicle high beams continuing to operate, ODI has tentatively concluded that the actions taken by GM mitigate any unreasonable risk to safety posed by HDM failure in the subject vehicles.Accordingly, the investigation is closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. The agency reserves the right to take additional action if warranted by new circumstances.The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.
EA07009 · Fuel Pump Module Leaks Gasoline
Opened Jul 10, 2007 · Closed Aug 28, 2008
Status: closed (inferred from source dates) · Fuel System, Gasoline:delivery:fuel Pump
DURING THE COURSE OF THIS EA INVESTIGATION, ODI OBSERVED THAT THE MAJORITY OF THE COMPLAINTS (88%) AND WARRANTY CLAIMS (94%) WERE REPORTED FOR VEHICLES THAT ARE REGISTERED FOR USE IN THE SALT BELT REGION OF THE US.THIS AREA INCLUDES 20 STATES IN THE NORTHEAST, MID ATLANTIC AND THE MIDWEST REGIONS AND THE DISTRICT OF COLUMBIA.CONSUMERS IN THE SALT BELT REGION REPORTED TO ODI THAT THEY COULD SMELL FUEL VAPORS IN THEIR VEHICLES WHILE DRIVING.UPON FURTHER EXAMINATION OF THEIR VEHICLES, THEY DISCOVERED THAT FUEL VAPORS WERE COMING OUT OF THE TOP OF THE FUEL TANK. THIS CONDITION IS CAUSED BY CORROSION OF THE RETURN AND SENDER LINES OF THE FUEL PUMP MODULE.WATER AND ROAD SALT COLLECT ON TOP OF THE FUEL PUMP LEADING TO SMALL PINHOLES APPEARING ON THE FUEL LINES.FUEL MAY LEAK AND COLLECT ON TOP OF THE MODULE AND/OR SPILL ONTO THE GROUND.THE DATA EVALUATED UNDER THIS INVESTIGATION REFLECT A RELATIVELY LOW FREQUENCY OF OCCURRENCE THAT LARGELY ARISES IN SALT BELT STATES.GM HAS EXTENDED THE WARRANTY ON THE SUBJECT COMPONENT TO TEN YEARS OR 120,000 MILES.FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED AT THIS TIME; ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.FOR ADDITIONAL INFORMATION SELECT DOCUMENT SEARCH.
EA04021 · Brake Lamp Failure
Opened Aug 3, 2004 · Closed Nov 4, 2004
Status: closed (inferred from source dates) · Exterior Lighting:brake Lights
GM STATES THAT SOME BRAKE/TAIL LAMP BULBS CAN PREMATURELY BECOME INOPERATIVE DUE TO MALFUNCTIONING BRAKE/TAIL LAMP SOCKETS.ON MARCH 2, 2004, GM INITIATED A 6-YEAR/72,000 MILE SPECIAL POLICY FOR 989,487 SUBJECT VEHICLES TO INSPECT AND REPLACE THE REAR BRAKE/TAIL LAMP BULB SOCKET ASSEMBLIES.ON APRIL 4, 2004, THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED A PRELIMINARY EVALUATION (PE04-032) BASED ON CONSUMER COMPLAINTS ALLEGING BRAKE LIGHTS NOT OPERATING WHEN THE BRAKE PEDAL IS DEPRESSED.ON AUGUST 3, 2004 ODI UPGRADED PE04-032 TO AN ENGINEERING ANALYSIS (EA04-021).BY LETTER DATED OCTOBER 27, 2004 GM NOTIFIED NHTSA THAT IT WILL CONDUCT A SAFETY RECALL (NHTSA # 04V527) COVERING SUBJECT VEHICLES THAT WERE NOT ALREADY REPAIRED UNDER GM'S SPECIAL POLICY.MY 2004 SUBJECT VEHICLES BUILT AFTER AUGUST 8, 2003 CONTAIN IMPROVED BRAKE LAMP ASSEMBLIES AND ARE NOT INCLUDED IN THE RECALL.GM DEALERS WILL INSTALL THE IMPROVED BRAKE LAMP ASSEMBLY ON SUBJECT VEHICLES BUILT ON AUGUST 8, 2003 AND EARLIER.THE ACTION TAKEN BY GM IS SUFFICIENT TO RESOLVE THE ISSUES RAISED BY THIS INVESTIGATION.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.
PE04032 · Brake Lamp Failure
Opened Apr 6, 2004 · Closed Aug 3, 2004
Status: closed (inferred from source dates) · Exterior Lighting:brake Lights
THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED THIS INVESTIGATION ON MODEL YEAR (MY) 2002-04 CHEVROLET TRAILBLAZER VEHICLES.GM REPORTS THAT OTHER VEHICLES SHARING THIS PLATFORM AND BRAKE LAMP DESIGN ARE THE MY 2002-2004 CHEVROLET TRAILBLAZER EXT; GMC ENVOY, XL, XUV; OLDSMOBILE BRAVADA AND 2004 BUICK RAINIER.COMPLAINTS ALLEGE THAT THE REAR BRAKE LAMP DOES NOT OPERATE WHEN THE BRAKE PEDAL IS DEPRESSED.THERE IS NO INDICATION TO THE DRIVER FROM INSIDE THE VEHICLE THAT ONE OR MORE BRAKE LAMPS BULBS ARE NOT FUNCTIONING.GM FOUND THAT HEAT FROM THE BULB COULD DEFORM THE LAMP SOCKET, PRODUCE ELECTRICAL ARCING AND AN INOPERATIVE BULB.TO CORRECT THE CONDITION, GM CHANGED THE BULB TO A BULB THAT TRANSMITS LESS HEAT TO THE SOCKET AND CHANGED THE SOCKET TO A THERMOPLASTIC POLYMER TO IMPROVE THERMAL STABILITY.THESE CHANGES WERE IMPLEMENTED INTO PRODUCTION VEHICLES ON OCTOBER 1, 2003.GM IMPLEMENTED A SPECIAL POLICY BY NOTIFYING CONSUMERS THAT IF THEY SHOULD EXPERIENCE A BRAKE LAMP FAILURE TO GO TO THEIR GM DEALERSHIP TO HAVE THE CIRCUIT BOARD CONTAINING THE BRAKE LAMP REPLACED ALONG WITH NEW BULBS.THIS POLICY IS GOOD FOR THE FIRST 6 YEARS OR 72,000 MILES OF THE LIFE OF THE VEHICLE.ODI WILL UPGRADE THIS INVESTIGATION TO EA 04-021 AND INCLUDE THE ABOVE MENTIONED VEHICLES.
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